Machine for smoothing and polishing floors.



No.'664',232. Patented D60. [8, I900. S. A. BISHOP.

MACHINE FOR SMOOTHING AND POLISHING FLOORS.

(Application filed May 18, 1900.

(No Model.) I

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Wi'iqasses UNITED STATES PATENT EEicE.

. SAMUEL A. BISHOPyOF SMETHPORT, PENNSYLVANIA.

MACHINE FOR SMOOTH INGAND POLISHING FLOORS.

$PEGIFICATION forming part of Letters Patent No. 664,232, dated December18, L900.

Application filed May 18,1900. serial No. 17,160. (No model.)

To all whom it may concern:

Be it known that I, SAMUEL A. BISHOP, a citizen of the United States,residing at Smethport, in the county of McKean and State ofPennsylvania,haveinveuted a new and useful Machine for Smoothing andPolishing Floors, of which the following is a specification.

The invention relates to improvements in machines for smoothing andpolishing floors.

The object of the present invention is to improve the construction ofmachines for smoothing and polishing tloorsand to provide a simple andcomparatively inexpensive one adapted to be operated by pushing it alongthe floor or other surface to be operated on and capable of permittingthe grinding and polishing disk or wheel to continue its rota- 110Dafter the operating mechanism or gearing has ceased to move, whereby themachine may be caused to operate for considerable time over a particularspot or place of the floor or other surface afterthe driving andpolishing wheel has attained a considerable speed.

The invention consists in the construction and novel combination andarrangement of parts, hereinafter fully described, illustrated in theaccompanying drawings, and pointed out in the claims hereto appended.

In the drawings, Figure 1 is a plan view of a smoothing and polishingmachine constructed in accordance with this invention.

Fig. 2 is a side elevation of the same. 'Fig. 3 is a transversesectional view. Fig. 4 is a ends of which are fixed carrying-wheels 4,

which support the rear portion of the machine. The axle 3 has keyed orotherwise fixed to'it a vertical gear-wheel 5, which meshes with ahorizontal pinion 6, located at the lower end of a rear vertical shaft 7and connected with the same by a clutch to permit the shaft 7 tocontinue its rotation after axle 3.

the axle has stopped by reason of stopping the machine. The clutch,which may be constructed in any suitable manner, preferably consists ofan upper clutch member or collar 8, the said pinion 6, and a series ofballs 9, interposed between the collar and the pinion and arranged inrecesses or sockets 10 of the collar and adapted to operate in grooves11 of the pinion. The grooves 11 of the pinion have inclined bottomwalls extending from the upper surface or face of the pinion toshoulders 12, against which the balls abut when the pinion is rotatedforwardly by the When the machine is stopped, or rather when its forwardmovement has-ceased, the shaft 7continues its rotation and the balls arecarried forward by the collar or upper clutch member 8, the inclinedportions of the bottoms of the grooves permitting such forward movementof the balls and lifting the same into the upwardly-extending recessesor sockets of the lower face of the collar or clutch member 8 as thesame rotates. The collar, which may be secured to the rear shaft 7in anysuitable manner, is preferably provided with a hub or sleeve 13, havingthreaded perforations for the reception of clampingscrews 14, whichengage the shaft 7.

The shaft 7 is journaled in upperandlower bearings 15 and 16 of the rearportion of the supporting-frame, in line with its center thereof, and itcarries a rear horizontal gearwheel 17, located above thesupporting-frame and meshing with a horizontal pinion 18 of anintermediate vertical shaft 19, which is journaled in upperand lowerbearings 20 and 21 of the upper portion of the frame. The lower bearingsare mounted upon a horizontal supporting bar or piece 22, which islocated above the carryingwvheels and which is secured to the front andrear portions of the frame, as clearly illustrated in Fig. 2 of theaccompanying drawings. The intermediate shaft 19- carries a fronthorizontal gearwheel 23, located below the plane of the rear horizontalgearwheel 17 and meshing with a horizontal pinion 240fa front verticalshaft 25, located at one corner of the supporting-frame in advance ofthe adjacent carrying-wheel and journaled in upper and lower bearings 26and 27. A The lower end of the vertical shaft has secured to it agrinding and polishing disk or wheel 28, designed to be constructed ofany suitable material to suit the character of the surface to beoperated on and the work to be performed, and it is held against suchsurface by the weight of the front portion of the machine. Then themachine is moved forward, the axle is rotated and through the gearing,heretofore described, communicates motion to the vertical front shaftand rotates the grinding and polishing wheel or disk. The frame isprovided with a rearwardly-ex tending inclined handle 28, having asuitable grip or handle-bar 29, adapted to be grasped by the operator,and the machine may be readily tilted to lift the grinding and polishingwheel from the supporting-surface in transporting the machine from oneplace to another and when it is desired that the grinding and polishingwheel attain a comparatively high rate of speed before bringing it intocontact with the surface to be operated on. It will also be apparentthat the pressure of the grinding and polishing wheel upon the surfaceto be dressed may be readily regulated by the operator from the rear ofthe machine by pressing down upon the handle to counterbalance theweight of the machine to a greater or less extent.

It will be seen that the machine is exceedingly simple and inexpensiveinconstruction, that it is adapted to be easily operated, and that it iscapable of permitting agrinding and polishing wheel or device to rotateforwardly after its forward movement has ceased.

What is claimed is- 1. A machine of the class described, comprising aframe, carrying-wheels, a rotary device arranged to engage a floor orothersupporting-surface, gearing connecting the rotary device with thecarrying-wheels, and a clutch connected with the gearing and adapted topermit the floor-engaging device to rotate while the carrying-Wheels arestationary, substantially as and for the purpose described.

2. A machine of the class described comprising a supporting-frame, anaxlejonrnale'd in suitable bearings at the back of the same,carrying-wheels fixed to the axle, the rear vertical shaft located abovethe axle, the vertical gear-Wheel mounted on the axle, a horizontalpinion arranged at the lower end of the rear shaft and meshing with thevertical gear-wheel and having a clutch connection with the rear shaft,a vertical shaft arranged at the front of the frame and extending fromthe top to the bottom thereof and provided at its lower end with agrinding or polishing device, an intermediate verticalshaft locatedbetween the said shafts, and gearing arranged at the top of the frameand connecting the said shafts,substantially as described.

3. In a machine of the class described, the combination of the pinionprovided with the grooves having inclined bottoms, the collar or memberhaving sockets or recesses, balls arranged in the sockets or recessesand adapted to operate in the said grooves, means for connecting thepinion with the carryingwheels, a shaft having the collar secured to it,and a grinding or polishing device connected by gearing with the shaft,substantially as described.

In testimony that I claim the foregoing as my own I have hereto aflixedmy signature in the presence of two witnesses.

SAMUEL A. BISHOP.

Witnesses:

DANIEL BACON, WALLACE VAN SCHOIOK.

